Almost 50 years after they were swept by the Boston Bruins in their last Stanley Cup Final appearance, the St. Louis Blues have avenged their 1970 defeat in historic fashion, beating the Eastern Conference champions 4-1 at TD Garden on Thursday night to claim their first-ever title.

The Bruins may have entered with the upper hand, touting home ice after dropping four goals on Blues rookie goalie Jordan Binnington in a 5-1 Game 6 rout, but he stifled an early onslaught of offense to start Thursday’s showdown. That allowed St. Louis to hold a 2-0 lead after two periods despite taking only six of their own shots at the halfway point of the action. From that point forward, with Boston fans muzzled and the Bruins’ biggest names back in the shadows, St. Louis simply put on a clinic, demonstrating pitch-perfect checking, transition defense and penalty killing — all before a pair of third-period goals sealed their first title in franchise history.